Light source device and endoscope

By using a combination device of multiple light sources, self-collimating lenses and optical fibers in the endoscope, the problem of large space occupied by the optical path and high debugging difficulty is solved, the optical path is simplified and the imaging clarity is improved, and more realistic Image display.

CN222172093UActive Publication Date: 2024-12-17SHENZHEN COMEN MEDICAL INSTR
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Patent Information

Application Number
CN202420278948.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-02-02
Publication Date
2024-12-17
Estimated Expiration
2034-02-02

AI Technical Summary

Technical Problem

The light path of the light source device in the existing endoscope takes up a lot of space, is difficult to debug, and the imaging is not clear enough.

Method used

The light source device using a combination of multiple light sources, self-collimating lenses and optical fibers. The light rays are collimated and converged through the self-collimating lens, and the optical fiber is transmitted to the coupler for light combination, reducing the optical path space and debugging complexity, and increasing the purple light source. To expand the combined wavelength range.

Benefits of technology

It has achieved the reduction of optical path space and reduced debugging difficulty, and improved the imaging clarity and color rendering of the endoscope, providing users with clearer and more realistic images.

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Abstract

The utility model relates to the technical field of illumination, and discloses an illumination device and an endoscope, a light source device comprises a plurality of light sources, a plurality of auto-collimating lenses, a plurality of optical fibers and a coupler, the plurality of light sources are used for emitting light, the plurality of auto-collimating lenses are arranged in one-to-one correspondence with the light sources and used for collimating or collecting the light emitted by the light sources, each optical fiber comprises a head part and a tail part, and the coupler is connected with the head part and the tail part. A plurality of heads of the plurality of optical fibers are respectively connected with the plurality of auto-collimating lenses in a one-to-one correspondence manner, so that the collimated or collected light enters the optical fibers from the heads, and tails of the plurality of optical fibers are connected with the coupler, so that the light in the plurality of optical fibers is combined in the coupler. Light combination is simpler and more convenient, optical elements such as a lens combination and a light combination piece do not need to be used, the space needed by a light path is reduced, only the positions of the auto-collimating lens and the light source need to be adjusted during light combination, and the debugging difficulty is reduced.
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Description

Technical Field

[0001] The utility model relates to the technical field of medical detection equipment, in particular to a light source device and an endoscope. Background Art

[0002] An endoscope is a device that can enter the human body through a natural orifice or a small incision made during surgery and is used to image the body cavity. In order to make the body cavity image clearer and more realistic, the endoscope is usually equipped with a light source to illuminate the body cavity.

[0003] Endoscopes in related technologies usually use RGB three-primary color light source devices, and use complex lens combinations and light combiners to collimate, combine, and converge light beams to illuminate the body cavity. However, in actual use, the optical path composed of optical components such as lens combinations and light combiners is very complex, which results in a relatively large space required for the optical path and increases the difficulty of debugging. Utility Model Content

[0004] In view of this, the utility model provides a light source device and an endoscope to solve the problem that the light path in the light source device occupies a large space and is difficult to debug.

[0005] In a first aspect, the utility model provides a light source device, comprising:

[0006] a plurality of light sources for emitting light;

[0007] A plurality of self-collimating lenses, arranged one by one corresponding to the light sources, for collimating or converging the light emitted by the light sources;

[0008] A plurality of optical fibers, each of which comprises a head and a tail, and the heads of the plurality of optical fibers are respectively connected to the plurality of self-collimating lenses in a one-to-one correspondence, so as to allow the collimated or collected light to enter the optical fibers from the heads;

[0009] A coupler, the tail portions of the plurality of optical fibers are connected to the coupler.

[0010] Beneficial effect: Multiple self-collimating lenses can collimate and converge the light from multiple light sources, so that the light transmitted through the self-collimating lenses converges at one point. The collimated light enters the optical fiber from the optical fiber head and is transmitted to the coupler from the optical fiber tail. The light in multiple optical fibers is combined in the coupler. The collimated optical fibers are input into the coupler through the optical fiber for light combination, making light combination simpler. There is no need to use optical elements such as lens combinations and light combiners, which reduces the space required for the optical path. When combining light, it is only necessary to adjust the position of the self-collimating lens and the light source, which reduces the difficulty of debugging.

[0011] In some embodiments, the light source includes at least some of the following light sources:

[0012] A red light source, for emitting red light;

[0013] A green light source, used for emitting green light;

[0014] A blue light source, used to emit blue light, wherein the red light, the green light and the blue light are combined to form white light;

[0015] A violet light source, used for emitting violet light.

[0016] Beneficial effects: The red light emitted by the red light source, the green light emitted by the green light source, and the blue light emitted by the blue light source are combined into white light. Since the white light of the endoscope is irradiated into the body cavity, some wavelengths of light will be absorbed by different tissues and organs of the human body. By setting a purple light source that emits purple light and combining it with red light, green light and blue light, the wavelength range of the combined light is increased, and the color rendering of the endoscope is better, thereby improving the clarity of the endoscope imaging and providing users with clearer and more realistic images.

[0017] In some embodiments, the light source has a divergence angle of 0° to 120°.

[0018] In some embodiments, the pitch of the self-collimating lens is 0.25P.

[0019] Beneficial effect: A self-collimating lens with a pitch of 0.25P is used. When light is input from one end face of the self-collimating lens, the light will be output from the other end face as parallel light after passing through the self-collimating lens, thereby achieving collimation of the light emitted by the light source.

[0020] In some embodiments, a housing is further included, wherein the light source, the self-collimating lens, the optical fiber and the coupler are installed inside the housing.

[0021] In the second aspect, the utility model also provides an endoscope, comprising the above-mentioned light source device, a light guide part and a mirror body, wherein the light guide part is connected to the coupler for outputting combined light, the light guide part is arranged on the mirror body, and the mirror body is detachably connected to the shell.

[0022] In some embodiments, it also includes:

[0023] A processor is electrically connected to the light source.

[0024] In some embodiments, it also includes:

[0025] a display, electrically connected to the processor;

[0026] A controller is electrically connected to the processor.

[0027] In some embodiments, it also includes:

[0028] An illumination lens is arranged on the mirror body, and the illumination lens is connected to the light guide portion and is used for outputting combined light to an illumination position.

[0029] Since the endoscope includes the above-mentioned light source device, it has the same effect as the light source device and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0031] Figure 1 This is a structural schematic diagram of a light source device according to an embodiment of the utility model;

[0032] Figure 2 A schematic diagram of a single-channel light source of a light source device according to an embodiment of the utility model;

[0033] Figure 3 The figure is a schematic structural diagram of an endoscope according to an embodiment of the utility model.

[0034] Description of reference numerals:

[0035] 1. Light source; 101. Red light source; 102. Green light source; 103. Blue light source; 104. Purple light source;

[0036] 2. Self-collimating lens;

[0037] 3. Optical fiber; 301. Head; 302. Tail;

[0038] 4. Coupler;

[0039] 5. Shell;

[0040] 6. Light guide;

[0041] 7. Mirror body;

[0042] 8. Processor;

[0043] 9. Display;

[0044] 10. Controller;

[0045] 11. Lighting lens. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0047] Combine the following Figures 1 to 3 , describing an embodiment of the utility model.

[0048] According to an embodiment of the present utility model, on the one hand, as Figure 1 and Figure 2 As shown, a light source device is provided, including multiple light sources 1, multiple self-collimating lenses 2, multiple optical fibers 3 and a coupler 4, the multiple light sources 1 are used to emit light, the multiple self-collimating lenses 2 are arranged in a one-to-one correspondence with the light sources 1, and are used to collimate or collect the light emitted by the light sources 1, each optical fiber 3 includes a head 301 and a tail 302, the multiple heads 301 of the multiple optical fibers 3 are respectively connected to the multiple self-collimating lenses 2 in a one-to-one correspondence, and are used to allow the collimated or collected light to enter the optical fiber 3 from the head 301, and the tails 302 of the multiple optical fibers 3 are connected to the coupler 4, and are used to combine the light in the multiple optical fibers 3 in the coupler 4.

[0049] The present embodiment does not make any specific limitation on the coupler 4. To conform to the actual situation, the coupler 4 in the present embodiment is composed of a plurality of optical fibers 3 having a core and an outer cladding. The plurality of optical fibers 3 are formed into one piece by a fused taper and cut at the fused taper. The cut surface formed by the cutting serves as the output end of the coupler 4. The core is connected one-to-one with the tails 302 of the plurality of optical fibers 3, and the output end is used to output combined light.

[0050] A plurality of self-collimating lenses 2 can collimate and converge the light from a plurality of light sources 1, so that the light transmitted through the self-collimating lenses 2 converges at one point, and the collimated light enters the optical fiber 3 from the head 301 of the optical fiber 3, and is transmitted to the coupler 4 from the tail 302 of the optical fiber 3, and the light in the plurality of optical fibers 3 is combined in the coupler 4, and the collimated optical fibers 3 are input into the coupler 4 through the optical fiber 3 for light combination, making light combination simpler, without the need to use optical elements such as lens combinations and light combining sheets, thereby reducing the space required for the optical path, and when combining light, only the position of the self-collimating lens 2 and the light source 1 needs to be adjusted, thereby reducing the difficulty of debugging.

[0051] In some embodiments, the light source 1 includes at least part of the following light sources 1: a red light source 101 for emitting red light, a green light source 102 for emitting green light, a blue light source 103 for emitting blue light, the red light, green light and blue light are combined to form white light, and a purple light source 104 for emitting purple light.

[0052] In this embodiment, a purple light source 104 is provided in the light source device to increase the wavelength range of light illumination of the light source device. The white light and the purple light in the light source device are mixed to form mixed light. When in use, the mixed light is irradiated into the body cavity. If some wavelengths of light in the white light are absorbed by different tissues and organs of the human body, the wavelength range of the mixed light is increased, so that the color rendering of the light source device on the endoscope is better, thereby improving the imaging clarity of the endoscope and providing the user with clearer and more realistic images, so as to better observe the inner wall conditions of tissues and organs in different operations.

[0053] Specifically, in this embodiment, the number of light sources 1 is four, namely, a red light source 101, a green light source 102, a blue light source 103 and a purple light source 104. The light after the red light source 101, the green light source 102 and the blue light source 103 are combined is white light, and the wavelength range of the combined light can be increased by adding the purple light source 104. In other embodiments not shown, the number of light sources 1 can also be three, five, six or other numbers, and the light source 1 can also be a light source 1 that emits light of other colors to increase the different wavelength ranges of the combined light.

[0054] The red light emitted by the red light source 101, the green light emitted by the green light source 102, and the blue light emitted by the blue light source 103 are combined into white light. Since the white light of the endoscope is irradiated into the body cavity, some wavelengths of light will be absorbed by different tissues and organs of the human body. By setting a purple light source 104 that emits purple light and combining it with red light, green light, and blue light, the wavelength range of the combined light is increased, and the color rendering of the endoscope is better, thereby improving the clarity of the endoscopic imaging and providing the user with a clearer and more realistic image.

[0055] In some embodiments, the divergence angle of the light source 1 is 0° to 120°.

[0056] The present embodiment does not specifically limit the light source 1. To meet the actual situation, the light source 1 in the present embodiment adopts an LED light source. In some other embodiments, the light source 1 may also be a laser, a Lambertian light source, or a xenon lamp, etc. Since the divergence angle of the LED light source is usually around 120°, the emitted light beam is relatively divergent, and the light incident surface of the head 301 of the optical fiber 3 cannot receive all the divergent light. By setting the self-collimating lens 2, the divergent light can be converged on the light incident surface of the head 301 of the optical fiber 3.

[0057] In some embodiments, the pitch of the self-collimating lens 2 is 0.25P.

[0058] A self-collimating lens 2 with a pitch of 0.25P is used. When light is input from one end of the self-collimating lens 2, the light will be output from the other end as parallel light after passing through the self-collimating lens 2, thereby achieving collimation of the light emitted by the light source 1.

[0059] In some embodiments, a housing 5 is further included, and the light source 1 , the self-collimating lens 2 , the optical fiber 3 and the coupler 4 are installed inside the housing 5 .

[0060] Specifically, in this embodiment, the housing 5 is a rectangular box, and a plurality of interfaces are provided on the outer wall of the housing 5 for connecting with external devices. It can be understood that the housing 5 is not limited to a rectangular box, and other shapes that can meet the use requirements of the light source device are also applicable.

[0061] According to an embodiment of the present utility model, on the other hand, Figure 3 As shown, an endoscope is also provided, comprising the light source device in this embodiment.

[0062] In some embodiments, the endoscope further includes a light guide 6 connected to the coupler 4 for outputting combined light, and the light guide 6 is disposed on the mirror body 7. In some embodiments, an end of the mirror body 7 connected to the housing 5 is provided with an external thread, and an interface in the housing 5 is provided with an internal thread, and the mirror body 7 and the housing 5 are detachably connected through the thread. It can be understood that the connection between the mirror body 7 and the housing 5 can also be a snap connection, etc.

[0063] In some embodiments, a processor 8 is further included, and the processor 8 is electrically connected to the light source 1 .

[0064] In some embodiments, a display 9 and a controller 10 electrically connected to the processor 8 are also included. The display 9 is used to output graphic images collected by the endoscope. The controller 10 includes a keyboard and a foot switch for inputting operation signals to the processor 8.

[0065] In some embodiments, a lighting lens 11 is disposed on the mirror body 7, and the lighting lens 11 is connected to the light guide portion 6 for outputting combined light to the lighting position.

[0066] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A light source device, characterized in that: include: A plurality of light sources (1) for emitting light; A plurality of self-collimating lenses (2), arranged one-to-one corresponding to the light sources (1), and used to collimate or collect the light emitted by the light sources (1); A plurality of optical fibers (3), each of the optical fibers (3) comprising a head portion (301) and a tail portion (302), the plurality of heads (301) of the plurality of optical fibers (3) being respectively connected to the plurality of self-collimating lenses (2) in a one-to-one correspondence, so as to allow the collimated or collected light to enter the optical fibers (3) from the heads (301); A coupler (4), wherein the tail portions (302) of the plurality of optical fibers (3) are respectively connected to the coupler (4).

2. The light source device according to claim 1, characterized in that: The light source (1) comprises at least part of the following light sources: A red light source (101), configured to emit red light; A green light source (102), configured to emit green light; A blue light source (103) is used to emit blue light, wherein the red light, the green light and the blue light are combined to form white light; The purple light source (104) is used to emit purple light.

3. The light source device according to claim 1 or 2, characterized in that: The divergence angle of the light source (1) is 0° to 120°.

4. The light source device according to claim 3, characterized in that: The pitch of the self-collimating lens (2) is 0.25P.

5. The light source device according to claim 4, characterized in that: Also includes: A housing (5), wherein the light source (1), the self-collimating lens (2), the optical fiber (3) and the coupler (4) are installed inside the housing (5).

6. An endoscope, characterized in that: include: The light source device according to claim 5; A light guide (6), connected to the coupler (4) and used for outputting combined light; A mirror body (7), the light guide portion (6) being arranged on the mirror body (7), and the mirror body (7) being detachably connected to the housing (5).

7. The endoscope according to claim 6, characterized in that Also includes: A processor (8) is electrically connected to the light source (1).

8. The endoscope according to claim 7, characterized in that Also includes: A display (9), electrically connected to the processor (8); A controller (10) is electrically connected to the processor (8).

9. The endoscope according to claim 7 or 8, characterized in that: Also includes: An illumination lens (11) is arranged on the mirror body (7); the illumination lens (11) is connected to the light guide portion (6) and is used to output combined light to an illumination position.